CN102029471A

CN102029471A - Laser machining machine

Info

Publication number: CN102029471A
Application number: CN2010102943280A
Authority: CN
Inventors: D·C·帕加内利
Original assignee: Agie Charmilles New Technologies SA; Agie Charmilles SA
Current assignee: Agie Charmilles New Technologies SA; Agie Charmilles SA
Priority date: 2009-09-25
Filing date: 2010-09-25
Publication date: 2011-04-27
Anticipated expiration: 2030-09-25
Also published as: EP2301706A2; EP2301706A3; CH700111B1; CN102029471B; US20110120981A1; US8941027B2

Abstract

The present invention relates to a machine for machining workpieces by means of a laser beam. The optical fibre terminates at an optical output head (27) that defines the optical axis of the laser light beam, which vaporizes the material. The optical output head (27) is rigidly attached to the frame (49) or to the casing of the laser head so that said optical output head remains integrally fastened to said frame or casing during the rotation of the laser head about the horizontal pivot axis (B). The polluted gases is generated in the machining area by the evaporation of material are collected by a suction nozzle (37) which is driven with the laser machining head during its rotation about the horizontal axis (B). A stream of clean dry gas is injected into the machining area by means of an injection nozzle (35) which is also driven with the laser machining head (8) during its rotation about the horizontal axis (B).

Description

Laser machining machine

Technical field

The present invention relates to a kind ofly be used for the machine of processing work by means of laser beam.

Background technology

Now, being present in the laser beam that utilize to focus on obtains using very widely from the process of the surface evaporation material of workpiece.In such processing, laser beam is reflected by two rotating mirrors (steering mirror), these two rotating mirrors can very rapidly be rotated around two normal axis, and the rotation of described rotating mirror is controlled according to the grating that is positioned at the plane by computer.This method is widely used in depiction in the plane.Generate high-power laser beam by lasing light emitter, the laser beam that generates in the exit of this lasing light emitter by optical fiber and a series of static state or rotating mirror and other optical module vertical conduction to pending surface.Most commercial Application are at the processing and the mould manufacturing field on the surface that need carve certain workpiece with very high meticulous control and precision.By removing material to heating suddenly to evaporate a part of material by the zone of laser beam illumination.Last diameter when laser beam arrives workpiece to be processed is less than 50 μ m.Executable operations in pantostrat.Laser beam uses scanning means (so-called galvanometric scanners (galvo-scanner), by the combination of two rotating mirrors, these two rotating mirrors can center on two very fast being rotated of normal axis) scan size is limited to several centimetres the interior workpiece of polygon.Polygon is defined so that when the focus tolerance that is positioned at laser beam with the given pending surface of polygonal when surface of post processing, guarantee that thus processing evenly.These two rotating mirrors can only cover limited angular amplitude thus.This limited scanning amplitude requires periodically laser head to be reorientated and redirected about pending workpiece.In order to handle the workpiece of any 3D layout, need to adopt at least five machines.In addition, this machine comprises for example dimensional measurement sensor, contact probe and camera, wherein, can accurately locate and directed laser head with respect to workpiece to be processed when above-mentioned parts carry out work.

Going up the execution material at all types of three-dimensional surfaces (comprising concave regions) removes.The method that generates texture on any 3D surface especially is present in a plurality of limited part surface that surface segmentation become in the adjacent polygon.

Is in the paper of " Near-net-shape laser beamstructuring for plastic injection moulds " at Rheinisch-Westfalische Tchnische Hochschule Aachen by the exercise question that Johannes Mario Kordt produces, and has described similar engraving machine in chapters and sections 5.1.Be applicable to that based on the machine of five pedestal structures of MIKRON-HSM 600U type handling great about 100 kilograms and size is limited to 250 * 250 * 250mm ³Workpiece.In a side, workpiece to be processed is fixed on the workbench that turns round and move along two quadrature rotating shaft B and C and linear axis X.At opposite side, the laser scans head is supported by linear axis Z, and this axle self moves along last linear axis Y.Because the flexibility of support, this machine construction is not to be used for the ideal arrangement of crudy greater than 200 kilograms heavy industry spare.In addition, the size of workpiece is subjected to the restriction of the size of support.

Summary of the invention

The present invention solves the aforesaid drawbacks by a kind of framework, and this framework comprises at least three orthogonal straight lines axles and two rotating shafts that are perpendicular to one another, and makes laser Machining head center on horizontal rotational shaft and make pending workpiece around vertical axis rotation.This structure provides high-caliber accuracy, and this is not to be maintained fixed in fact because the weight and volume of travelling workpiece can not produce the condition of work of variable deflection and laser Machining head.Be noted that it is laser that lasing light emitter transmits energy via the optical fiber that carries out unwinding along the cableway that ends at the light delivery, the optical axis of light output head definition laser beam, this laser beam is at the end in its path evaporating materials.A kind of special arrangement that is characterised in that this light delivery especially of the laser machining machine that the present invention proposes, thus the light delivery must rigidity be installed to the shell of framework or laser head and keeps integrated and is fastened to described framework or shell to guarantee to center in the process that horizontal axis of rotation is rotated laser beam at laser head always stable.

The laser Machining head that proposes also comprises suction nozzle, is used for drawing dusty gas and the dust that produces at machining area by evaporating materials, follows the rotation of laser head around its trunnion axis thereby design this suction nozzle by a kind of novel manner.This machine also comprises blow gun, is used for clean dry gas flows is injected into machining area.This blow gun is also integrated to be fastened to laser Machining head promptly it is rotated as a whole with described head when laser Machining head is rotated around trunnion axis.

Description of drawings

Can know other advantage based on feature in the independent claims and detailed more hereinafter description of the present invention and the accompanying drawing explained, these accompanying drawings are as follows:

Fig. 1 is the perspective view of the integral body of laser machining machine.In this accompanying drawing, critical elements has been shown and required exterior body or the sheet metal of protection operator has not been shown;

Fig. 2 is the perspective view that turns round and be connected to the laser head of the device that moves along the Z axle around the axle B of machine.In this expression, laser head and its sheet metal, shell and/or over cap are installed together;

Fig. 3 is the perspective view that places the parts of laser head inside.In this expression, shell and laser head have been removed.The size of described shell is symbolically by label 40 expressions;

Fig. 4 is the partly perspective view of the unlimited laser head of looking from behind of shell;

Fig. 5 and Fig. 4 are similar, are used to support the also element of rotary laser processing head but introduced;

Fig. 6 is used for laser head is installed to device, tension force and the twist alleviator of the structure of machine and the perspective view of contaminated air drawing device.In this expression, removed visible laser head in Fig. 3, Fig. 4 and Fig. 5; And

Fig. 7, Fig. 8 and Fig. 9 are the modification at Fig. 6 of different viewing angles.

The specific embodiment

The machining tool that is schematically shown in Fig. 1 is installed on the highly stable framework, and this framework is made of the wide horizontal base 1 of having fixed vertical important actor 2.In the front of important actor 2, two

vertical guide rails

3 and 4 are along the moving of the vertical axis Z guiding vehicle frame 5 of machine, and are rotated by servomotor 16 drive screws 6 to make vehicle frame 5 move.As shown in this width of cloth figure, the horizontal cylinder 15 of vehicle frame 5 supportings, the end of horizontal cylinder 15 is connected to plate 7 rigidly with supporting laser head 8, and this laser head 8 is designed to turn round around a trunnion axis B corresponding with the axle of the symmetry of cylinder 15.Yet, the difference of linear axis arrange and the situation of the machine of some reduced size under, can save horizontal cylinder 15.Under second kind of situation, plate 7 is directly connected to vehicle frame 5 (Fig. 2 and Fig. 6 are to Fig. 9), and revolution laser head 8 constitutes the core component of machine.High-power laser light source 90 (not shown) are installed in the back of vehicle frame 5.This lasing light emitter 90 produces laser beam, and this laser beam is transmitted by optical fiber 24.Optical fiber 24 carries out the inlet of unwinding up to laser head 8 along the cableway system (not shown).In this, as can be seen from Figure 3, optical fiber 24 ends in the light delivery 27, the light delivery 27 integrated laser heads 8 that are fastened to.Next, the laser beam from 27 outputs of light delivery is deflected into the galvanometric scanners 25 that is installed in the laser head 8 by two

stationary mirrors

28 and 39.

On the terminal point that laser beam is propagated, the surface of the workpiece that laser beam flying is pending.As mentioned above, because described scanning is limited to several centimetres girth, so in order to prolong the girth of the laser beam that acts on workpiece, the rotation of machine and linear axis X, Y, Z, B and C are used for periodically revising laser head about the relative position of workpiece and the All Ranges that can be linked into pending workpiece.

Four guide rails 9 are installed on the top of horizontal base of framework 1, are used for supporting frame 10, and vehicle frame 10 moves along trunnion axis Y, by moving vehicle frame 10 by servomotor 20 drive screws 11.Two other horizontal guide rails 12 are installed on the top of vehicle frame 10, and are vertical with four guide rails 9.Horizontal guide rail 12 supporting frames 13, vehicle frame 13 moves along the X-axis of machine, moves vehicle frame 13 by servomotor 22 drive screws 23.Vehicle frame 13 supporting tables 14, pending workpiece is fixed on the workbench 14.This workbench 14 has been hidden its drive motors around vertical axis C rotation.

Fig. 1 also shows compressed air drying equipment 21 and another equipment 19 that is used for drawing air and the air of being drawn by suction nozzle being filtered by suction nozzle.When needing lasing light emitter 90 high-power, equipment 18 is used for cooling laser source 90.

Special attention will be given to: the wide horizontal base 1 of framework is associated with four guide rails 9 and has constituted highly stable structure, and can be used in the very heavy workpiece of supporting and overbending can not occur, and no matter the position of workpiece how in the working space XY.In addition, advantageously, very Chong workpiece can center on that trunnion axis (C) is rotated but not around trunnion axis (A or B).This makes machine to carry out work and structure generation minimal deformation with constant moment of flexure.This is to determine all functions that center on significant levels rotating shaft (B) structure laser head (it is the assembly of relative light weight) and will carry out the laser engraving operation to incorporate into here why.

According to traditional laser machining machine, when handling the workpiece of big weight and physical dimension complexity, not only needing thus also needs around trunnion axis it to be scanned around the trunnion axis rotary work piece.Usually, this machine has very expensive framework.For example, in order to scan workpiece in the horizontal direction, heavy rigidity fastener need be incorporated in the workbench.Thus, around trunnion axis scanning workpiece but the machine that makes laser head carry out this scanning has some advantage.

The suitable machine framework that is used to carry out the processing of the above-mentioned type has three orthogonal straight lines axle X, Y and Z and two rotating shafts that are perpendicular to one another thus at least.This framework makes can be around horizontal rotational shaft laser head 8 and around vertical axis rotation workpiece to be processed.These two rotating shafts separate thus.

Yet it is inappreciable carrying out this selection, and this is because it has caused a series of technical problem: the required critical function that is no less than ten of hereinafter listed correct implementation must be incorporated in the rotation of laser head:

-galvanometric scanners 25 is placed in the inside of laser head 8 and sticks into row control by near electricity.These provide by a series of cable that must transport.Utilize the independently transmission of communication cable execution route file;

-laser beam from lasing light emitter 90 (for example, the model YLP-1-120-50-50-HC pulsed optical fibre laser source of the IPG of manufacturer) propagates into light delivery 27 (Fig. 3) by optical fiber 24, reflect by first stationary mirror 28 with 45 then, pass optical gate 29 and beam shaping 38 then, reflect by second stationary mirror 39 with 45 then, pass galvanometric scanners 25 (Fig. 4) then, before colliding with the surface of workpiece, arrive output lens 36 (Fig. 2) then with 26.Be noted that the optical fiber 24 that the end only is shown is to have limited flexible breakable element, and in the time must transporting and be incorporated into rotation B to it via cableway, it is thorny handling it;

The control cable of-optical gate 29 and the control cable of diode array 30 have constituted the luminous caution signal when Laser Processing;

-need utilize accurate pickoff 31 (for example, from Renishaw) thus detect workpiece about workpiece location and directed laser head 8 in first being processed.This function comprises at least two stube cables: one is used to transmit measuring-signal, and another is used to control the collapsible vehicle frame 32 that pickoff 31 has been installed.It is not in the retrieving position in its shell when this sensor is worked, and when carrying out the activity that comes across gas cylinder actuators when measuring;

-CCD camera 33 is used for accurately locating and directed laser head 8 about workpiece to be processed.It comprises the stube cable that is used to transmit image and is used to provide near the cable of light emitting diode 34 rings the exit lens that is placed in camera;

-settle orientable blow gun 35 near the exit lens 36 of galvanometric scanners.This blow gun is used to blow away all impurity of coming from processing and keeps air cleaner under the lens.Provide this blow gun 35 via the relative stiffness flexible pipe that also must experience the mechanical stress that rotation B and generation can not ignore;

-suction nozzle 37 is scalable, orientable and contractile, and is arranged as the exit lens 36 of as close as possible galvanometric scanners, cooperates with blow gun 35.Can adjust this nozzle about the axle vertical with the gyroaxis B of laser instrument processing head 8 as suction nozzle 37.Blow gun 35 at first points to the processing district, and is relative with suction nozzle 37 then, thereby collected by suction nozzle 37 fully by the cleaning gas tream of the contamination by dust that comes from the processing district.This nozzle must be drained a large amount of low pressure contaminated airs, and the cross section of pipe wants big relatively thus, thereby has caused space problem.In order to make these pipes integrated with the mobile formation of laser head 8 best, they must be rigidity and comprise rotating seal, thereby these rotating seals can be introduced friction torque and produce the risk that local stress emits local stress to be delivered to laser head and to destroy its accurate positioning thus;

The shell 40 of-laser head 8 is to use the closed chamber of the pipe pressurizing that transmits the dry filter air that breaks away from any oil vapour.Pressure sensor can form the part of this function and must provide via private cable equally;

-anti-collision safety system comprises two subfunctions hereinafter describing in detail, incorporates into to be used for stopping several microswitches of machine and must transmit continuous cable under unexpected collision situation.Under case of collision, shock measurement sensor notice machine.

The needs of incorporating a large amount of functions in the laser head 8 in revolution relate to redesign and are used for the load transmission, are used to the structure that guides and be used to transmit the device of these a large amount of electrical connections, flexible pipe, fiber waveguide or the like, and these devices are exclusively used in each of these functions.This installation comprises the parts that surpass 100 these types.Around the amplitude big more (for example, above 220 °) of B axle rotation, the torsional stress that is produced by these parts is big more.The shock point of laser beam can the several μ m of deflection.Thus, one of main difficult problem is present in the accuracy of guaranteeing at all position optical axises of laser head 8.Mainly realize this target by the framework that utilizes anchor clamps 65 (Fig. 3) will place the light delivery 27 of the end of optical fiber 24 to be rigidly fixed to laser head 8.Because the mechanical stress that laser head 8 is not caused by a large amount of cables that are connected to it in moving process, so, keep stable by the optical axis of the arrangement definition of light delivery 27 based on tension force and twist mitigation system (seeing below).

In Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the critical function that is positioned at the rear portion of laser head 8 can not clearly be distinguished.This especially some element incorporate among the rotation B and situation about moving by installing plate 48, this can find out from Fig. 5, Fig. 6, Fig. 7 and Fig. 8.Specifically, above-mentioned following device is fixed on this installing plate 48:

-have the system of drawing of suction nozzle 37 and

pipeline

55,56 and 58, be used to utilize the coaxial each other pipe that is installed together with rotating seal 57 to drain the air that pollutes;

-tension force and twist alleviator promptly are used for installing and drive the system of a series of cables of combining and be clipped in a series of glands 46 before the closed chamber 40 that passes laser head 8 and other connector, flexible pipe, optical fiber or the like;

The anti-collision system of-laser head is used to protect the frangible part in the chamber 40.Can understand this device from Fig. 4 and Fig. 5;

The anti-collision system of-suction nozzle 37 can be explained its operation based on the help of Fig. 8.

Fig. 6, Fig. 7, Fig. 8 and Fig. 9 are used to describe the operation that is used for fixing and rotates the system of other required Connection Element of a series of cables and operation laser head 8.Installing plate 48 is rigidly fixed to axle 41, and axle 41 is coaxial with rotating shaft B.Only in Fig. 9, can see the surface of the axle 41 of supporting installing plate 48.This axle 41 is rotated by servomotor, and the stator of this servomotor is fixed on the Z axle vehicle frame 5.Annulus 42 is coupled to rotate freely around described axle 41 by the needle bearing (not shown).One of the surface 43 of annulus 42 support ring shoulder 44, ring shoulder 44 self is rigidly fixed on the axle 41.Therefore, annulus 42 can rotate freely around axle 41, and can not receive the moment of torsion by this generation.Annulus 42 extends with Bracket Type by arm 59, a series of glands 46 of end 45 supportings of arm 59.Element 46 is collected and cable bag and other required connecting elements of critical function of incorporating among the rotation B tightly is fixed together.It is inner and can carry out certain movement that carriage 59 is strapped in forked parts 47, and this forked parts 47 self rigidity is installed on the installing plate 48, thereby forked parts 47 transmission power in the plane of installing plate 48 produces moving of axle 41.The moment of torsion that the servomotor transmission is used to drive gland 46 passes to carriage 59 via installing plate 48 and forked parts 47.Since carriage 59 by annulus 42 with respect to axle 41 loose installations, so recover via annulus 42 by axle 41 and be not delivered to laser head thus by connecting elements by undesirable torsional stress of the packet generation of connecting elements.Thereby this rigidity of 41 enough can be ignored its deflection.In other words, by the undesirable power on the indeformable mechanical organ elimination of a series of reality driving shaft 41.

Advantageously, that Fig. 6, Fig. 7, Fig. 8 and this drive system shown in Figure 9 can be eliminated laser head because the bag of the member that is rotatably connected and since the direction counter-rotating cause wrench caused does not wish power to guarantee the excellent accuracy of reorientating thus.

Fig. 4 and Fig. 5 show the anti-collision system of laser head.Except in Fig. 4, removed installing plate 48 with explain surface 49 (part of laser head 8 and constitute its framework) and supporting it and to the fastening interface between the installing plate 48 of its transmission moment of torsion, this two width of cloth figure is much at one.Utilize three screw (not shown) laser heads 8 to carry out fixed press installing plate 48 and carry out rigid rotating by described installing plate via the surface 49 of its framework.These screws designed to be able to and bear limited shearing force and can bear excessive vibrations.In Fig. 4 and Fig. 5, be used to receive the boring of these screws or the label of perforate is 51.If described screw surrender then still utilizes two band shoulder safety screw (not shown) to keep laser head 8, these two band shoulder safety screws pass installing plate 48 and surface 49 via hole 53.Several mm clearance are set between shoulder screw and hole.Laser head 8 can fall when screw breaks, but owing in installing plate 48, formed wide recess 54 around delivery 27, so be connected to the shearing that the light delivery 27 of optical fiber 24 terminations of laser head 8 can not be subjected to installing plate 48.This layout is used to protect the fragile part of laser head.Be worth thus pointing out: although it is very complicated to incorporate the function of rotation of laser head into, laser head is protected and can not bumps.

Fig. 6, Fig. 7, Fig. 8 and Fig. 9 show in detail system and the collision preventing device thereof that is used to drain the air that is subjected to the Laser Processing pollution.Suction nozzle 37 is telescopic, that is to say, the length of its jet pipe can be adjusted.Can also use the angle of 60 pairs of nozzles 37 of rotary cylinder actuator to adjust, rotary cylinder actuator 60 comprises the mechanical brake that uses rotating handles 61 manually to adjust.Suction nozzle 37 still is recoverable, and it may be withdrawn into the folding position for fear of collision in positioning action.This suction nozzle 37 is connected to roomy endless tube 55, and endless tube 55 is formed by two coaxial cylinders in another installing around axle 41.From Fig. 6 and Fig. 8 as can be seen, for the air that will pollute is sent to endless tube 55 from suction nozzle 37, the air of pollution must pass through intermediate conduit 63.For the air that shows pollution via its cylinder-shaped hole 64 that passes endless tube 55, in Fig. 7 and Fig. 9, removed this intermediate conduit 63.The axle of cylinder-shaped hole 64 constitutes the gyroaxis of suction nozzle 37.This rotating shaft B with laser head is vertical.The suction nozzle 37 that is fixed to endless tube 55 via element 63 is rotated around axle B by above-mentioned annulus 42.Endless tube 55 and annulus 42 link together by a series of mechanical driving member (not shown) that places interface 62 (Fig. 8) on periphery.These mechanical parts will pass to spinner member 55 from the moment of torsion that spinner member 42 transmits in a conventional manner, if bump at suction nozzle 37 places thus then element 62 is subjected to shearing (thus serving as the machine insurance silk).Under situation about shearing, the element (not shown) of rotary cylinder actuator 60 collides or spurs the end 45 of wall 59 and pull the safety microswitch (not shown) down, thereby stops machine.Rotation endless tube 55 opens wide and enters same another fixing endless tube 56 of putting around axle 41.The cross section of endless tube 56 is identical with endless tube 55 with geometry, constitutes the prolongation of endless tube 55, and this endless tube 56 is fixed on the Z axle vehicle frame.One group of O ring 57 sealing slip interface 55/56.Pipeline 58 is collected the air of the pollution of sending with sizable flow from endless tube 56, it is sent to filter platform 19.

Importantly, thus the gas of pollution and the dust of effectively removing generation from machining area make the ceiling capacity of laser beam 26 arrive the surface of pending workpiece.

Based on this purpose, orientable blow gun 35 is relative with scalable, orientable and recoverable suction nozzle 37.Shape according to workpiece to be processed is carried out orientation to blow gun 35, thus with the clean air conductance to machining area.The gas stream and the dust that come from the pollution of machining area are collected by described suction nozzle 37, and suction nozzle 37 also turns round according to the shape of workpiece to be processed.In addition, suction nozzle 37 is telescopic, thereby and is designed to as close as possible pending surface thus and collects dusty gas stream and dust near the launch point (even relative still like this when big at focal length).

When laser head 8 is rotated around horizontal axis of rotation B,, blow gun 35 and suction nozzle 37 near the zone on surface, continue to flow thereby being activated strong air flow.

Preferably be used to utilize focussed laser beam to process the machine of any 3 D workpiece according to of the present invention according to above description manufacturing.Yet version can clearly provide the interests under some situation in addition.

Vehicle frame

10 and 13 shown in Figure 1 has constituted YX forked working platform, is used to support the workbench 14 of firmware workpiece to be processed.It will also be appreciated that a kind of different of linear axis arrange: specifically, be favourable thereby take all translations to tool side workpiece to be processed only be rotated around vertical axis.In addition, to X separate with Y-axis for example make workbench 14 only support by the Y-axis vehicle frame and vertical important actor 2 to be supported by the X-axis vehicle frame be favourable.

Although it is favourable utilizing the rigid pipe design contaminated air excretory duct that connects via rotating seal, this excretory duct can be formed by flexible hose and be driven and driven by Z axle vehicle frame 5 on the other hand by installing plate 48 on the one hand to small part.In this version, the prolongation of that part of the flexible hose that is driven by installing plate 48 for example is connected to cylinder-shaped hole 64 via rotating seal.

In another version of tension force and twist alleviator, carriage 59 is bound in the forked parts 47, and the space between these forked parts and the carriage is filled with elastic damping material to avoid the discontinuous of the power of transmitting.

In the simple version of tensile strain alleviator, gland 46 is directly installed on the installing plate 48.

Should be understood that without departing from the scope of the invention, those skilled in the art can make any version.

Claims

1. one kind is intended to cause the focussed laser beam of a part of material generation local evaporation to process the machine of any 3 D workpiece by means of a kind of surface at pending workpiece:

The framework of described machine comprises three orthogonal straight lines axis (X, Y, Z) and two rotations that are perpendicular to one another (B, C), thereby makes it possible to rotate around horizontal axis (B) a kind of laser Machining head (8) and around vertical axis (C) and rotate a kind of workpiece to be processed;

Laser beam (26) is reflected by galvanometric scanners (25) in the exit of laser Machining head (8), and described galvanometric scanners (25) comprises can center on two two rotating mirrors that vertical axis pivots fast;

Laser beam (26) is produced by lasing light emitter (90);

Described lasing light emitter comes to its energy of laser Machining head transmission via the optical fiber of untiing along the cableway system unwinding (24);

Described optical fiber ends at light delivery (27) and locates, and light delivery (27) defines the optical axis of the laser beam that material is evaporated;

Laser Machining head (8) comprises framework (49) and shell;

Laser Machining head (8) is periodically reorientated and is turned round again so that arrive the new region of pending workpiece,

It is characterized in that:

Light delivery (27) rigidity is attached to framework (49) or to the shell of laser Machining head, thereby makes that the light delivery keeps being fastened to described framework or shell integratedly described in the process that is rotated around horizontal pivot axis line (B) at laser head;

The contaminated gas that is produced in machining area by material is evaporated is collected by suction nozzle (37), drives suction nozzle (37) by laser Machining head in the process that laser Machining head is rotated around horizontal axis (B);

Clean dry gas flows is injected in the machining area by means of blow gun (35), drives blow gun (35) by laser Machining head (8) equally in the process that laser Machining head (8) is rotated around horizontal axis (B).

2. machine according to claim 1 is characterized in that: in the process that laser Machining head (8) is rotated around horizontal axis (B), during inaction, contact probe (31) and/or CCD camera (33) utilize laser Machining head (8) to drive.

3. machine according to claim 1; it is characterized in that: laser Machining head (8) is equipped with a kind of mechanical device of under the case of collision that meets accident its parts being protected of being intended to be used for; thereby this device comprises and is designed to the trip bolt that surrender was lost efficacy laser Machining head is come off under the effect of too much shearing force, so that keep when it comes off by band shoulder safety screw.

4. machinery according to claim 1, it is characterized in that: it is equipped with tension force and twist alleviator, be intended to be used to laser Machining head to eliminate by a large amount of electrical connection that transmits via ending at the cableway in a series of glands (46), flexible pipe, undesirable power that fiber waveguide caused, this device is to form by means of the forked parts (47) that the gland (46) that is fixed to loose carriage (59) is rotated, during action, one side of forked parts (47) is connected to loose carriage (59), and the opposite side rigidity is attached to the installing plate (48) that is used to support laser Machining head (8), and described installing plate (48) is fixed to rotating driveshaft bar (41); Go up undesirable power that absorbs by the indeformable mechanical organ of a series of essence at drive shaft rod (41) thus.

5. machine according to claim 1 is characterized in that: the suction nozzle (37) that is intended to be used to collect contaminated gas is adjustable, and can be rotated around the axis vertical with the pivot axis (B) of laser Machining head (8).

6. machine according to claim 5 is characterized in that: the length that is intended to be used to collect the suction nozzle (37) of contaminated gas can be adjusted.

7. machine according to claim 5 is characterized in that: the suction nozzle (37) that is intended to be used to collect contaminated gas is equipped with the microswitch that stops machine when bumping.

8. machine according to claim 1 is characterized in that: the blow gun (35) that is intended to be used for to inject cleaning gas tream in machining area can be adjusted, and can be rotated around the axis vertical with the pivot axis (B) of laser Machining head (8).

9. according to each described machine in the claim 5,6 and 8, it is characterized in that: blow gun (35) points to machining area, and with suction nozzle (37) be vis-a-vis, thereby make the cleaning gas tream of the contamination by dust be subjected to coming from machining area collect by suction nozzle (37).

10. machine according to claim 2 is characterized in that: contact probe (31) be installed in that recoverable vehicle frame (32) is gone up and in the time must carrying out measurement the action by the cylinder actuator launch.